Secure Coding in JavaScript
10 days ago
- #JavaScript
- #XSS
- #Security
- JavaScript is widely used across the internet, making it a prime target for attackers.
- Cross-site scripting (XSS) is a major security concern in JavaScript, attacking users directly through their browsers.
- To prevent XSS, perform input validation, output encoding, use Content Security Policy (CSP), and secure cookies with the 'HttpOnly' flag.
- Modern JavaScript frameworks like React, Angular, and Vue.js automatically perform output encoding, enhancing security.
- Avoid inline scripting to reduce XSS risks and improve code organization.
- Use 'strict mode' in JavaScript to write safer, cleaner, and more predictable code.
- Leverage open-source tools like DomPurify, Retire.js, and npm Audit to enhance security.
- Clearly identify text within code to prevent execution of unintended scripts.
- Apply variables only to safe attributes and avoid dynamic, unsafe attributes.
- Validate input on the backend to prevent bypassing front-end security checks.
- Avoid problematic JavaScript functions like 'eval()' and 'innerHTML' when handling user data.
- Follow secure coding practices such as input validation, encryption, and secure authentication.
- Implement a secure system development life cycle (S-SDLC) to ensure robust and secure applications.